Install Numpy in VirtualEnv on Windows

Question

How can I install numpy in virtualenv...

easy_install numpy is throwing error.. I can not use the binary installer because this would install numpy in the python main installation and not in virtualenv..

Thanks

Answer 1

Another (not so great) solution is to get the installer, install it into your default Python directory, then copy it over to your virtualenv manually.

Long version

1. Go here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy
2. Install it.
3. Find it in your python installation (probably at C:\Python27\Lib\site_packages\numpy, or similar
4. Copy the numpy directory over to $virtual_env\Lib\sites_packages\numpy.

Worked for me, but it's not elegant. I think there are also exe installers on numpy's site, but I find it's easier to just go to the one above when I need things than to poke around on various other sites.

Answer 2

You cannot use easy_install directly for fairly technical reasons I would rather not get into. There is a solution, albeit not optimal: once in the virtual environment, go into numpy sources, and run:

python setupegg.py install

The key point is using setupegg.py instead of setup.py.